Which of the following is amphoteric oxide?Mn_(2)O_(7), CrO_(3), Cr_(2 – InterviewSolution

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1.	Which of the following is amphoteric oxide?Mn_(2)O_(7), CrO_(3), Cr_(2)O_(3), CrO, V_(2)O_(5), V_(2)O_(4)
Answer» `V_2O_5,Cr_2O_3` `Mn_2O_7,CrO_3` `CRO,V_2O_5` `V_2O_5,V_2O_4` SOLUTION :Oxides in the LOWER oxidation state are basic `(i.e. CrO, V_2,O_2)`, those in HIGHER oxidation state `(e.g. Mn_2O_7, CrO_3)` are acidic and in the intermediate state `(e.g., Cr_2,O_3, V_2O_5)` are amphotertic.

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